乙烯-乙烯醇共聚物/碳纳米管复合发泡材料的电磁屏蔽性能研究

刘云杰; 金碧辉; 马昊宇; 龚鹏剑; 牛艳华; Chul B. Park; 李光宪

doi:10.11777/j.issn1000-3304.2022.22188

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乙烯-乙烯醇共聚物/碳纳米管复合发泡材料的电磁屏蔽性能研究

研究论文 | 更新时间：2023-05-22

- 乙烯-乙烯醇共聚物/碳纳米管复合发泡材料的电磁屏蔽性能研究
  增强出版
- Electromagnetic Shielding Properties of Ethylene-vinyl Alcohol Copolymer/Carbon Nanotube Nanocomposite Foams
- 高分子学报 2023年54卷第1期页码：106-120
- 作者机构：
  
  1.四川大学高分子科学与工程学院高分子材料工程国家重点实验室成都 610065
  2.Department of Mechanical and Industrial Engineering， University of Toronto， Toronto， Canada M5S 3G8
- 作者简介：
  
  E-mail: pgong@scu.edu.cn
  guangxianli@scu.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 ┣51703146);52073187┫;四川省科学技术厅国际合作(2020YFH0009)
- DOI：10.11777/j.issn1000-3304.2022.22188
  中图分类号：
- 纸质出版日期：2023-01-20，
  
  网络出版日期：2022-10-06，
  
  收稿日期：2022-05-18，
  
  录用日期：2022-07-29
扫描看全文
刘云杰,金碧辉,马昊宇等.乙烯-乙烯醇共聚物/碳纳米管复合发泡材料的电磁屏蔽性能研究[J].高分子学报,2023,54(01):106-120.

Liu Yun-jie,Jin Bi-hui,Ma Hao-yu,et al.Electromagnetic Shielding Properties of Ethylene-vinyl Alcohol Copolymer/Carbon Nanotube Nanocomposite Foams[J].ACTA POLYMERICA SINICA,2023,54(01):106-120.
刘云杰,金碧辉,马昊宇等.乙烯-乙烯醇共聚物/碳纳米管复合发泡材料的电磁屏蔽性能研究[J].高分子学报,2023,54(01):106-120. DOI： 10.11777/j.issn1000-3304.2022.22188.

Liu Yun-jie,Jin Bi-hui,Ma Hao-yu,et al.Electromagnetic Shielding Properties of Ethylene-vinyl Alcohol Copolymer/Carbon Nanotube Nanocomposite Foams[J].ACTA POLYMERICA SINICA,2023,54(01):106-120. DOI： 10.11777/j.issn1000-3304.2022.22188.

摘要

选用高机械强度和耐气候性乙烯-乙烯醇共聚物(EVOH)作为基体，添加高效导电填料多壁碳纳米管(MWCNTs)，同时为了进一步提高材料性能，添加了聚醚多元醇(EOPO)与4

4'-二苯基甲烷二异氰酸(MDI)的共聚物. 采用绿色环保的超临界二氧化碳发泡法制备EVOH/MDI-

-EOPO/MWCNTs纳米复合发泡材料，结果表明在EVOH/MDI-

-EOPO/MWCNTs复合材料中引入多孔结构，利用多层界面反射-吸收电磁波，比电磁屏蔽性能提升270%. 通过调控MWCNTs体积含量与泡孔结构，当MWCNTs体积含量达到2.7 wt%时，EVOH/MDI-

-EOPO/MWCNTs复合发泡材料在

波段(9~12 GHz)表现出优异的比电磁屏蔽效能(41.76 dB·cm

/g).

Abstract

With the rapid development of global science and technology

electromagnetic radiation pollution is becoming more and more serious

and there is an urgent need for electromagnetic shielding materials

which require higher performance: light weight

high mechanical strength

high conductivity

and good electromagnetic interference shielding effect. In order to meet the requirements

ethylene-vinyl alcohol copolymer (EVOH) with high mechanical strength and good weather resistance was selected as the matrix

and multi-walled carbon nanotubes (MWCNTs) with high-efficiency conductive filler were added. Meanwhile

in order to further improve the material properties

a copolymer of polyether polyol (EOPO) and 4

4'-diphenylmethane diisocyanate (MDI) was added. In this paper

EVOH/MDI-

-EOPO/MWCNTs nano-composite foams were prepared by supercritical carbon dioxide foaming method

which is environmentally friendly. The results show that the introduction of a porous structure into EVOH/MDI-

-EOPO/MWCNTs composites

and the use of multilayer interfaces to reflect and absorb electromagnetic waves

can improve the electromagnetic shielding performance by 270%. By adjusting the MWCNTs content and cell structure

when the MWCNTs volume content reaches 2.7 vol%

the EVOH/MDI-

-EOPO/MWCNTs composite foam material exhibits an excellent specific electromagnetic shielding efficiency (41.76 dB·cm

/g) in the X-band (9-12 GHz).

关键词

电磁屏蔽乙烯-乙烯醇共聚物超临界二氧化碳发泡多壁碳纳米管多孔纳米复合材料

Keywords

Electromagnetic shieldingEthylene-vinyl alcohol copolymersSupercritical carbon dioxide foamingMulti-walled carbon nanotubesPorous nanocomposites

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